In the previous year, the depreciation and amortization expenses were included in the following captions: kEUR Depreciation Amortization Total Cost of sales -10,797 -2 -10,799 Selling expenses -562 -2,183 -2,745 Administrative expenses -2,045 -1,269 -3,314 Research and development costs -198 -1,651 -1,849 Total -13,602 -5,105 -18,707 6.8 Impairment of Goodwill and Intangible Assets The expenses include impairment of goodwill associated with the cash-generating unit "Trailer Systems" of kEUR 9,972 (previous year: kEUR 0) and "Powered Vehicle Systems" of kEUR 6,024 (previous year: kEUR 0) and on intangible assets with indefinite useful lives of kEUR 3,038 (previous year: kEUR 0). More details are illustrated in Note 8. 7 INCOME TAXES The major components of income tax expense are: kEUR 01/01/08­12/31/08 01/01/07­12/31/07 Current income taxes -5,859 -11,135 Deferred income taxes 3,065 15,539 Income tax reported in the consolidated income statement -2,794 4,404 The effective income tax rate for the Group for the year ended December 31, 2008 is -12.59% (previous year: -65.10%). The following table reconciles the actual to the expected income tax expense for the Group in 2008, computed by applying the Group's corporate income tax rate of 28.59% (previous year: 36.00%). For German entities, a corporate income tax rate of 27.10% (previous year: 36.58%) was used, which consisted of a corporation tax of 15.83% (including solidarity surcharge; previous year: 22.71%) and trade income tax of 11.27% (previous year: 13.87%), taking into account that the trade income tax is not deductible since the business taxation reform. For the North American subgroup, the 2008 income tax rate remained unchanged and included a federal tax rate of 35.00% and a state tax rate of 1.10%. 93